:root {
    --img_ratio2373: 4/3; 
}

#s18{
    aspect-ratio: var(--img_ratio2373);
}

.img2373{
    background-image: url(../../img/2373_43.jpg);
    aspect-ratio: var(--img_ratio2373);
}

/*----- MOBILE -----*/
@media only screen and (max-aspect-ratio: 1/1){
    .img2373{
    }
}